Use static inline for iface_{setup,delete}_addr in tests/sys/net/routing.

This fixes possible link errors, similar to:

ld: error: undefined symbol: iface_setup_addr
>>> referenced by test_rtsock_l3.c:111 (tests/sys/net/routing/test_rtsock_l3.c:111)
>>>               test_rtsock_l3.o:(presetup_ipv4)
>>> referenced by test_rtsock_l3.c:79 (tests/sys/net/routing/test_rtsock_l3.c:79)
>>>               test_rtsock_l3.o:(presetup_ipv6)
>>> referenced by test_rtsock_l3.c:512 (tests/sys/net/routing/test_rtsock_l3.c:512)
>>>               test_rtsock_l3.o:(atfu_rtm_change_v4_gw_success_body)
>>> referenced 10 more times

In C (not C++), 'naked' inline is almost always a mistake. Either use
static inline (this is appropriate for most cases), or extern inline.

MFC after:	3 days

1 files changed, 2 insertions, 2 deletions

diff --git a/tests/sys/net/routing/rtsock_common.h b/tests/sys/net/routing/rtsock_common.h
index bad72400941f..7da88e0eb512 100644
--- a/tests/sys/net/routing/rtsock_common.h
+++ b/tests/sys/net/routing/rtsock_common.h
@@ -204,7 +204,7 @@ iface_open(char *ifname)
  * Sets primary IPv4 addr.
  * Returns 0 on success.
  */
-inline int
+static inline int
 iface_setup_addr(char *ifname, char *addr, int plen)
 {
 	char cmd[512];
@@ -225,7 +225,7 @@ iface_setup_addr(char *ifname, char *addr, int plen)
  * Removes primary IPv4 prefix.
  * Returns 0 on success.
  */
-inline int
+static inline int
 iface_delete_addr(char *ifname, char *addr)
 {
 	char cmd[512];